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From "Robbie Gemmell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (QPID-4170) JMX threads can spin in the Queue MBean if there is a failure when viewing message content
Date Wed, 01 Aug 2012 12:56:03 GMT

     [ https://issues.apache.org/jira/browse/QPID-4170?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robbie Gemmell updated QPID-4170:
---------------------------------

    Affects Version/s:     (was: 0.18)
        Fix Version/s:     (was: 0.19)
                       0.18
             Assignee: Robbie Gemmell  (was: Keith Wall)

Change merged to the 0.18 branch.
                
> JMX threads can spin in the Queue MBean if there is a failure when viewing message content
> ------------------------------------------------------------------------------------------
>
>                 Key: QPID-4170
>                 URL: https://issues.apache.org/jira/browse/QPID-4170
>             Project: Qpid
>          Issue Type: Bug
>          Components: Java Broker
>    Affects Versions: 0.12, 0.13, 0.14, 0.15, 0.16, 0.17
>            Reporter: Robbie Gemmell
>            Assignee: Robbie Gemmell
>            Priority: Critical
>             Fix For: 0.18
>
>
> During the work on QPID-4164 it was found that JMX threads can spin in the Queue MBean
if they fail when viewing message content, looping down into the message and back store asking
for content which will never be returned. These threads will never stop spinning, and will
consume CPU resources and introduce additional/unnecessary resource contention within the
store layer.
> The view content method of the Queue MBean should be updated to avoid this possibility.

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